Prosecutors say a stepfather and son charged in a West Bridgewater arson Wednesday night may be linked to 23 other suspicious fires.

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Mark Sargent, 45, and Jeanmarie Louis, 23, both of Middleborough, were both arrested and charged with burning a building and attempting to burn a public building.

The fire was in a commercial building on South Main Street that was under construction.

Massachusetts State Police said they were tracking Sargent and Louis, who are related, by GPS.

Prosecutors say the method used in setting Wednesday night's fire is similar to at least 23 other arson cases. In each case, a Dura Flame starter log was used.

The Plymouth County District Attorney was scheduled to hold a news conference at 2 p.m. to release more details regarding the fire.

Between this past September and early December, at least 15 fires were set in unoccupied or abandoned buildings in southeastern Massachusetts, including in Brockton, Quincy, Easton, Hanson, Middleboro, Raynham and Weymouth, our news partners at The Enterprise reported.

Both suspects appeared for arraignment Thursday in Brockton District Court, where they were ordered held pending a dangerousness hearing set for next week.